Finish this sentence: "The most interesting hitchhiker critter I've discovered in my reef tank is..."

[Gumbies R Us]

This lovely RoseCoral that came on the rock I got from Gulf Live Rock

Cool, you got coral!

 

[sphinx15]

Bobbit worm

 

[JoJosReef]

Wow! I'd never seen one of those before today!

That is an interesting worm! Never seen it before!

Yes, it is a very interesting worm! And looks to be a beneficial detritivore, although the population can explode in the right mud/sand habitats. Not sure why it isn't more common since the worm is widely distributed between Texas and the NW Atlantic. Clymenella torquata, which is what I think I have, is actually called the bamboo worm since it looks like bamboo.

 

[Daniel@R2R]

...chitons

Interesting (to me) because I have no idea where they came from.
Hadn't added a coral in over 6 months when I first spotted a tiny one on front glass.
Now, I have a bunch frequently visible and getting obviously larger.
*maybe they've been in my rock for two years without me ever seeing one but seems weird

I've posted same before in other threads but couldn't resist as I'm still puzzled.

Cool! Definitely beneficial!

 

[Daniel@R2R]

Yes, it is a very interesting worm! And looks to be a beneficial detritivore, although the population can explode in the right mud/sand habitats. Not sure why it isn't more common since the worm is widely distributed between Texas and the NW Atlantic. Clymenella torquata, which is what I think I have, is actually called the bamboo worm since it looks like bamboo.

I'm super curious about these guys now. I'd love to see a thread specifically discussing them. I'll be doing some more research now!

 

[findingsimple]

Probably an acro crab living in a pink lemonade colony.

 

[MDAquatics]

The most interesting hitchhiker critter I've discovered in my reef tank is this worm of the Clymenella genus, which I casually named the Spike-Funnel-Anus Worm. Yes, that spiky funnel shaped end of the worm is its anus. In fact, the Clymenella worms can take in detritus for consumption through both their head and their anus, although the anus still serves the typical role of an anus for excreting waste. I briefly toyed with the idea of calling it the "Serrated-Funnel-Anus" Worm, but that name suggests that the worm uses its anus for cutting, which is not the role of the anus for this worm (or any other anus in the animal kingdom that I'm aware of).

Winning! This is too funny

 

[Barncat]

Alas I have had none so far

 

[Barncat]

Oops double post; I'd love some friendly hitchhikers!

 

[afrokobe]

Aussie Coral from live rock!

Live Rock Coral ID

I bought some live Aussie rock from @Eric Cohen a few months ago. Seriously amazing rock, I wish i had more room to order more! Some pictures from when it came in: Unfortunately I had a bit of die off as my tank was going through a mini cycle with the large amount of dry rock. Fast...

www.reef2reef.com

 

[CRABDADDY]

I think I determined this to be something called a sap sucker at the time, but it could be something else.

 

[CBonito]

I had a small moray eel come in some live rock once which was cool.

 

[Alexraptor]

My Siderastrea coral!

Gulf/Caribbean stone coral hitchhikers are the best, mainly because they are truly the "forbidden fruit" of the hobby!

 

[Keywest99]

a purple legged pistol shrimp, that looks just like a bright red lobster was my best hitchiker'